Phone to Fridge: shut up!

McHenry, Mark; Roberson, Dennis; Matheson, Robert J.

doi:10.1109/mspec.2015.7226614

Cited by 5 publications

(6 citation statements)

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“…There are many residential and industrial appliances which generate electronic noise. The reliable research on this issue can be found in [26]. Each type of area is disturbed, and particularly the industrial ones.…”

Section: Communication Distractionsmentioning

confidence: 99%

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Electromagnetic compatibility issues in hybrid wired and wireless industrial networks

Gaj

Maćkowski

2020

PLoS ONE

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Industrial networks are currently the only communication means designed for real-time systems used in industry. Networked control systems (NCS) are still important and commonly used type of such systems operating on shop floor. As a computerized node of NCS, a programmable logic controller (PLC) is usually used. In most cases, contemporary devices of such kind are equipped with more than one network interface of various types. Typically, only one interface is activated in NCS. Sometimes, the other is used for communication between NCS and supervisory systems. Occasionally, it is additionally involved in the data transmission in the factory IT systems. In general, however, using a single network interface is a more common solution. In this paper, the mutual utilization of more than one interface is discussed in order to back up the NCS network and to manage the node-related traffic within the scope of higher level services. The question of dependability of such a system from the electromagnetic compatibility point of view is discussed. The example is provided based on Profinet via wired and wireless connection.

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Section: Communication Distractionsmentioning

confidence: 99%

“…Each type of area is disturbed, and particularly the industrial ones. According to [26], for industrial area the typical frequency of radio (RF) noise is between 80 MHz and 1 GHz. Above this frequency the noise power drops due to lower power of sources and higher absorption.…”

Section: Communication Distractionsmentioning

confidence: 99%

Electromagnetic compatibility issues in hybrid wired and wireless industrial networks

Gaj

Maćkowski

2020

PLoS ONE

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“…With these quantities we estimate a single period of the CIRh[n, k] defined in (11), via a least sum of squared errors (LSSE) channel estimator [37], [33,Eq. (16)], that is :…”

Section: A Blind Estimation Of the Channel Matrixmentioning

confidence: 99%

“…5], [5], [6]. Instances of these scenarios include non-orthogonal multiple access (NOMA) [7], [8], full duplex communications, cognitive communications [9], digital subscriber line (DSL) communications [10] as well as additional communications mediums and paradigms, including the "Internet of Things" [11]. In [6], we considered the joint estimation of the carrier frequency offset and the channel impulse response for this channel model, and proposed a compressed-sensing based approximate joint maximum likelihood estimator for these quantities.…”

Section: Introductionmentioning

confidence: 99%

A New Frame Synchronization Algorithm for Linear Periodic Channels With Memory

Kolaman

Dabora

2020

IEEE Access

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Identifying the start time of a sequence of symbols received at the receiver, commonly referred to as frame synchronization, is a critical task for achieving good performance in digital communications systems employing time-multiplexed transmission. In this work we focus on frame synchronization for linear channels with memory in which the channel impulse response is periodic and the additive Gaussian noise is correlated and cyclostationary. Such channels appear in many communications scenarios, including narrowband power line communications and interference-limited wireless communications. We derive frame synchronization algorithms based on simplifications of the optimal likelihood-ratio test, assuming the channel impulse response is unknown at the receiver, which is applicable to many practical scenarios. The computational complexity of each of the derived algorithms is characterized, and a procedure for selecting nearly optimal synchronization sequences is proposed. The algorithms derived in this work achieve better performance than the noncoherent correlation detector, and, in fact, facilitate a controlled tradeoff between complexity and performance.

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“…Nevertheless, many applications require the intrinsic safety and reliability of a wired medium [8], or need higher or predictable bandwidth, or operate in an unfavorable electromagnetic environment [9]. Some devices might still need to be continuously powered to operate, and these might all be reasons to make a cable the preferred medium over a wireless link.…”

Section: Related Workmentioning

confidence: 99%

Optimizing linear routing in the ToLHnet protocol to improve performance over long RS-485 buses

et al. 2016

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As the adoption of sensing and control networks rises to encompass the most diverse fields, the need for simple, efficient interconnection between many different devices will become ever more pressing. Though wireless communication is certainly appealing, current technological limits still prevent its usage where high reliability is needed or where the electromagnetical environment is not really apt to let radio waves through. In these cases, a wired link, based on a robust and well-consolidated standard such as an RS-485 bus, might prove to be a good choice. In this paper, we present an extension to the routing strategy originally implemented in the recently proposed "tree or linear hopping network" (ToLHnet) protocol, aimed at better handling the special but important case of linear routing over a (possibly very long) wired link, such as an RS-485 bus. The ToLHnet protocol was especially developed to suit the need of low complexity for deployments on large control networks. Indeed, using it over RS-485 already makes it possible to overcome many of the traditional limitations regarding cable length, without requiring segmenting the bus to install repeaters. With the extension here proposed, it will also be possible to simultaneously reduce latency (i.e., increase throughput, should it matter) for short-distance communications over the same cable, largely increasing the overall network efficiency, with a negligible increase in the complexity of the nodes' firmware.

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Phone to Fridge: shut up!

Cited by 5 publications

References 0 publications

Electromagnetic compatibility issues in hybrid wired and wireless industrial networks

Electromagnetic compatibility issues in hybrid wired and wireless industrial networks

A New Frame Synchronization Algorithm for Linear Periodic Channels With Memory

Optimizing linear routing in the ToLHnet protocol to improve performance over long RS-485 buses

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